clang/test/CodeGen/pr45476.cpp

   1 // RUN: %clang_cc1 -triple arm-unknown-linux-gnueabi -emit-llvm %s -o - | FileCheck -check-prefix=LIBCALL %s
   2 // RUN: %clang_cc1 -triple armv8-eabi -emit-llvm %s -o - | FileCheck -check-prefix=NATIVE %s
   3 // PR45476
   4
   5 // This test used to get into an infinite loop,
   6 // which, in turn, caused clang to never finish execution.
   7
   8 struct s3 {
   9   char a, b, c;
  10 };
  11
  12 _Atomic struct s3 a;
  13
  14 extern "C" void foo() {
  15   // LIBCALL-LABEL: @foo
  16   // LIBCALL: call void @__atomic_store
  17   // NATIVE-LABEL: @foo
  18   // NATIVE: store atomic i32 {{.*}} seq_cst, align 4
  19
  20   a = s3{1, 2, 3};
  21 }